Unfortunately, the smaller of the 2 caterpillars blew away when McIver tried to transfer him/her to the bush. I'm glad to report that McIver did not 'lose it' when that happened - he recovered quite well. The larger of the 2 made the move just fine. Now, though, 5 days later, we can't find him anymore so we're assuming he built his crysalis and will soon be fluttering about.
Here is McIver with the caterpillar who survived the move back to a natural habitat.Update: We still can't find the original caterpillar, but there is a new teeny-tiny caterpillar on one of the bushes. I'll keep you posted.